The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory. Take special note that while the original Bernstein software works with barycentric coordinates, we convert these results into a heliocentric coordinate system.
# Object: 12UH177 # Created Fri Nov 22 02:09:19 2024 # Orbit generated from Bernstein formalism # Fitting 27 observations of 27 # Arc: 1.46y # First observation: 2011/09/01 # Last observation: 2013/02/14 Preliminary a, adot, b, bdot, g, gdot: -0.000165 0.018131 -0.000032 -0.005768 0.022177 0.000000 # Chi-squared of fit: 7.00 DOF: 48 RMS: 0.09 # Min/Max residuals: -0.18 0.18 # Exact a, adot, b, bdot, g, gdot: 1.328755E-05 1.800421E-02 -3.906445E-06 -5.840464E-03 2.225997E-02 2.473594E-03 # Covariance matrix: 4.6615E-13 -8.2848E-14 1.5758E-14 -1.5309E-13 4.0963E-13 1.9766E-11 -8.2848E-14 3.4882E-13 1.0315E-14 -1.0061E-13 2.6990E-13 1.2994E-11 1.5758E-14 1.0315E-14 2.5428E-13 -2.4184E-13 2.7048E-14 2.1457E-12 -1.5309E-13 -1.0061E-13 -2.4184E-13 3.8612E-13 -2.8163E-13 -1.6465E-11 4.0963E-13 2.6990E-13 2.7048E-14 -2.8163E-13 7.8592E-13 3.6546E-11 1.9766E-11 1.2994E-11 2.1457E-12 -1.6465E-11 3.6546E-11 2.0831E-09 # lat0 lon0 xBary yBary zBary JD0 16.405020 34.912108 0.838777 0.156915 -0.533088 2455805.995036 # Heliocentric elements and errors Epoch: 2455800.5000 = 2011/08/27 Mean Anomaly: 136.63317 +/- 0.549 Argument of Peri: 347.00006 +/- 0.532 Long of Asc Node: 255.22394 +/- 0.003 Inclination: 23.71509 +/- 0.001 Eccentricity: 0.18606065 +/- 0.0010 Semi-Major Axis: 39.58173069 +/- 0.0149 Time of Perihelion: 2421278.6367 +/- 137.3 Perihelion: 32.21712807 +/- 0.0424 Aphelion: 46.94633330 +/- 0.0443 Period (y) 249.0293 +/- 0.14 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 36.27821966 +/- 0.0014 Ecliptic Y 24.29544335 +/- 0.0010 Ecliptic Z 12.68745180 +/- 0.0005 Ecliptic XDOT -0.00086483 +/- 0.0000 Ecliptic YDOT 0.00210442 +/- 0.0000 Ecliptic ZDOT -0.00060311 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 45.46811215 +/- 0.0013 Geocenter to KBO 44.92369649 +/- 0.0018 # Hcoef: 7.85
The following table shows the complete astrometric record for 12UH177. The first three columns show the date of observation. The next six columns are RA and DEC. The next column (when provided) is the observed magnitude and filter. The next column is the object name (12UH177) followed by the observatory code and reference code for the source of the astrometry.
2011 09 01.49427 01 45 48.313 +28 31 21.93 24.4r 12UH177 568 C~1C6T 2011 09 01.54049 01 45 48.191 +28 31 22.10 24.3r 12UH177 568 C~1C6T 2011 09 05.47683 01 45 36.511 +28 31 21.99 24.5r 12UH177 568 C~1C6T 2011 11 24.40638 01 39 48.804 +28 01 43.70 24.1r 12UH177 568 C~1C6T 2011 11 24.41064 01 39 48.795 +28 01 43.62 24.4r 12UH177 568 C~1C6T 2011 12 01.44101 01 39 23.507 +27 57 30.62 24.4r 12UH177 568 C~1C6T 2011 12 01.46247 01 39 23.443 +27 57 30.09 24.0r 12UH177 568 C~1C6T 2012 08 18.56096 01 51 13.190 +28 34 12.95 24.9r 12UH177 568 C~1C6U 2012 08 21.51640 01 51 07.892 +28 34 38.24 24.1r 12UH177 568 C~1C6U 2012 08 23.50753 01 51 03.930 +28 34 52.34 24.5r 12UH177 568 C~1C6U 2012 08 24.47464 01 51 01.886 +28 34 58.42 24.9r 12UH177 568 C~1C6U 2012 08 28.45033 01 50 52.679 +28 35 17.60 24.6r 12UH177 568 C~1C6U 2012 09 13.38246 01 50 04.023 +28 34 59.39 24.3r 12UH177 568 C~1C6U 2012 09 14.46875 01 50 00.068 +28 34 52.56 24.5r 12UH177 568 C~1C6U 2012 10 19.43725 01 47 25.667 +28 25 13.04 23.9r 12UH177 568 C~1C6U 2012 10 19.51434 01 47 25.293 +28 25 11.03 24.5r 12UH177 568 C~1C6U 2012 10 20.42535 01 47 20.895 +28 24 47.74 24.5r 12UH177 568 C~1C6U 2012 10 21.40942 01 47 16.119 +28 24 21.74 24.4r 12UH177 568 C~1C6U 2012 10 21.44796 01 47 15.928 +28 24 20.76 24.3r 12UH177 568 C~1C6U 2012 10 21.50363 01 47 15.669 +28 24 19.20 12UH177 568 C~1C6U 2012 10 21.50789 01 47 15.650 +28 24 19.16 12UH177 568 C~1C6U 2012 10 23.38023 01 47 06.575 +28 23 28.69 24.3r 12UH177 568 C~1C6U 2012 11 14.39750 01 45 23.861 +28 12 04.11 24.8r 12UH177 568 C~1C6U 2012 11 16.31888 01 45 15.577 +28 10 58.43 24.4r 12UH177 568 C~1C6U 2013 02 06.24489 01 43 41.763 +27 32 04.99 24.3r 12UH177 568 C~1C6U 2013 02 14.24187 01 44 05.165 +27 30 48.22 24.4r 12UH177 568 C~1C6U 2013 02 14.27613 01 44 05.274 +27 30 47.93 24.4r 12UH177 568 C~1C6U
The following table shows the residuals to the orbit fit. The first coumn is the point number. The second column is the time, in years, measured from the first observation. The third and fifth columns are the regularized positions used in the orbit fit. The fourth and sixth columns are the residuals, in arc seconds, for RA and Dec respectively.
1 0.0000 0.00 -0.10 0.00 -0.05
2 0.0001 -1.43 0.09 0.75 -0.01
3 0.0109 -144.39 0.09 57.83 -0.03
4 0.2297 -5070.11 -0.07 143.50 -0.00
5 0.2298 -5070.25 0.06 143.47 0.03
6 0.2490 -5476.82 -0.12 38.07 -0.09
7 0.2491 -5477.81 0.09 37.90 0.10
8 0.9639 4046.85 -0.04 -1407.80 -0.11
9 0.9720 3990.86 -0.18 -1359.02 0.07
10 0.9774 3947.26 -0.04 -1327.02 -0.02
11 0.9801 3924.34 -0.00 -1311.62 0.02
12 0.9910 3818.15 0.06 -1249.91 0.13
13 1.0346 3214.00 0.18 -1034.69 -0.07
14 1.0376 3162.96 0.08 -1022.14 -0.08
15 1.1333 1056.40 -0.18 -817.32 0.00
16 1.1335 1051.07 -0.11 -817.38 -0.04
17 1.1360 988.55 0.07 -817.67 0.17
18 1.1387 920.39 -0.09 -818.63 0.09
19 1.1388 917.68 -0.08 -818.61 0.13
20 1.1390 913.93 0.08 -818.80 -0.01
21 1.1390 913.68 0.13 -818.75 0.05
22 1.1441 783.76 -0.07 -821.53 0.07
23 1.2044 -729.94 0.14 -954.95 -0.13
24 1.2096 -856.04 -0.03 -975.16 0.02
25 1.4340 -2882.52 0.10 -2674.73 -0.16
26 1.4558 -2622.65 0.01 -2862.64 -0.03
27 1.4559 -2621.41 -0.02 -2863.45 -0.05
The following table comes from a 10My integration of the orbit of the object. Three columns are shown. The first column is the result of integrating the nominal orbit. The other two columns are based on clones of the nominal orbit that are +/- 3 sigma from the nominal orbit. If all three types agree then the classificiation is deemed secure. The basis for these calculations is described in more detail in AJ, 129, 1117 (2005). Any use made of these calculations should refer to and credit this publication and the Deep Ecliptic Survey Team.
12UH177 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.647 39.692 39.606 ecceobj 0.185 0.188 0.182 incobj 23.707 23.706 23.708 qmin 30.921 30.910 30.927 qmax 48.456 48.416 48.490 amean 39.455 39.455 39.455 amin 39.063 39.067 39.055 amax 39.882 39.886 39.901 emean 0.177 0.178 0.180 emin 0.134 0.132 0.136 emax 0.215 0.216 0.216 imean 25.588 25.633 25.486 imin 24.796 24.836 24.700 imax 26.430 26.471 26.332 excite_mean 0.467 0.468 0.467 fracstop 1.000 1.000 1.000 cjmean 2.794 2.794 2.795 libcent 0 180.0 180.6 178.6 libamp 0 75.5 75.7 85.4 libcent 1 -180.0 -180.0 -180.0 libamp 1 -180.0 -180.0 -180.0 libcent 2 -180.0 -180.0 -180.0 libamp 2 -180.0 -180.0 -180.0 libcent 3 -180.0 -180.0 -180.0 libamp 3 -180.0 -180.0 -180.0 libcent 4 -180.0 -180.0 -180.0 libamp 4 -180.0 -180.0 -180.0 kozaimean 187.0 187.1 177.4 kozaiamp 180.0 180.0 180.0